Double Lock Label Based on Thermosensitive Polymer Hydrogels for Information Camouflage and Multilevel Encryption

Area of Science:

• Materials Science
• Polymer Chemistry
• Information Security

Background:

• Developing robust encryption technologies to prevent information leakage and combat counterfeiting is a significant challenge.
• Existing methods often lack dynamic adaptability and multilevel security features.

Purpose of the Study:

• To propose a novel
• double lock
• encryption strategy utilizing both lower critical solution temperature (LCST) and upper critical solution temperature (UCST) polymer hydrogels.
• To achieve information camouflage and multilevel encryption with dynamic identification capabilities.

Main Methods:

• Synthesized two types of thermo-responsive hydrogels via random copolymerization.
• Precisely controlled phase transition temperatures by adjusting the number of -CO-NH₂ groups within the hydrogel network.
• Governed color change kinetics by manipulating polymer hydrogel crosslink density.

Main Results:

• Successfully developed hydrogels exhibiting both LCST and UCST behaviors.
• Demonstrated precise control over phase transition temperatures and diffusion kinetics.
• Integrated multiple LCST and UCST hydrogels to enable time- and temperature-dependent information encryption and identification.

Conclusions:

• The proposed
• double lock
• strategy offers a promising approach for advanced information encryption and anti-counterfeiting.
• The developed smart responsive materials provide dynamic, multilevel security features.
• This research has significant implications for secure data storage, authentication, and the development of intelligent materials.